Patents Assigned to Akiko Itai
  • Patent number: 9974860
    Abstract: An aqueous solution formulation containing Compound (I) can be manufactured by performing a first step of preparing a dissolution liquid obtained by dissolving a compound represented by Formula (I) below or a pharmacologically acceptable salt thereof and a compound represented by any of General Formulas (II) to (IV) below in an organic solvent, a second step of removing the organic solvent from the dissolution liquid, and a third step of adding a solution to residual substances obtained through the second step to dissolve the residual substances.
    Type: Grant
    Filed: September 11, 2014
    Date of Patent: May 22, 2018
    Assignee: AKIKO ITAI
    Inventors: Akiko Itai, Ryoichi Tomita, Tomoyuki Fujikawa
  • Publication number: 20160220680
    Abstract: An aqueous solution formulation containing Compound (I) can be manufactured by performing a first step of preparing a dissolution liquid obtained by dissolving a compound represented by Formula (I) below or a pharmacologically acceptable salt thereof and a compound represented by any of General Formulas (II) to (IV) below in an organic solvent, a second step of removing the organic solvent from the dissolution liquid, and a third step of adding a solution to residual substances obtained through the second step to dissolve the residual substances.
    Type: Application
    Filed: September 11, 2014
    Publication date: August 4, 2016
    Applicant: Akiko ITAI
    Inventor: Akiko ITAI
  • Publication number: 20060100789
    Abstract: Methods for searching stable docking models of biopolymer-ligand molecule complex, which comprise the steps of: (1) searching possible hydrogen-bond schemes between a biopolymer and a ligand molecule by preparing possible combination sets of hydrogen-bonding heteroatoms in the ligand molecule with dummy atoms located at the positions of heteroatoms that can be hydrogen-bond partners to hydrogen-bonding functional groups in the biopolymer; (2) estimating the possible the hydrogen-bond schemes between the biopolymer and ligand molecule and the possible conformations of a hydrogen-bonding part of the ligand molecule at the same time by comparing the distances between the dummy atoms with the distances between the hydrogen-bonding heteroatoms; and (3) obtaining the possible docking models of the biopolymer-ligand molecule complex by changing the coordinates of all atoms of the ligand molecule into the coordinate system of the biopolymer, according to the correspondences between the hydrogen-bonding heteroatoms in
    Type: Application
    Filed: December 13, 2005
    Publication date: May 11, 2006
    Applicant: Akiko ITAI
    Inventors: Akiko Itai, Miho Mizutani
  • Publication number: 20040137432
    Abstract: A method for selecting lead-candidate compounds capable of binding to a receptor biopolymer from a database containing information about atomic types and mode of covalent bonds of compounds by using a computer, comprising a step of selecting candidate compounds from compounds stored in the database based on quantitative, two-dimensional and/or three-dimensional information of one or more query molecules capable of binding to the biopolymer. The query molecules can be obtained by an automatic structure construction method, for example. The lead-candidate compounds capable of binding to the biopolymer can be retrieved rapidly by using an ordinary personal computer or workstation without requiring huge calculation.
    Type: Application
    Filed: March 19, 2001
    Publication date: July 15, 2004
    Applicant: Akiko ITAI
    Inventors: Akiko Itai, Nobuo Tomioka
  • Publication number: 20020155501
    Abstract: A method of predicting biological functions of query proteins whose steric structures are known or predictable, using a three-dimensional structure database storing bio-active compounds which bind to target proteins with known biological functions, which comprises the steps of:
    Type: Application
    Filed: November 5, 2001
    Publication date: October 24, 2002
    Applicant: Akiko ITAI.
    Inventors: Akiko Itai, Masazumi Imamura
  • Publication number: 20020062155
    Abstract: A method for creating physiologically active compounds, comprising the following steps: (1) generating a compound database storing molecular structures covering all the combinations of at least one substitution site selected from substitutable sites existing on a basic molecular skeleton and utilizable substituents; and (2) extracting molecular structures satisfying requirements for exhibiting the physiological activity from the compound database.
    Type: Application
    Filed: March 26, 2001
    Publication date: May 23, 2002
    Applicant: Akiko ITAI
    Inventors: Akiko Itai, Koichi Shudo
  • Patent number: 5642292
    Abstract: Methods for searching stable docking models of biopolymer-ligand molecule complex, which comprise the steps of: (1) searching possible hydrogen-bond schemes between a biopolymer and a ligand molecule by preparing possible combination sets of hydrogen-bonding heteroatoms in the ligand molecule with dummy atoms located at the positions of heteroatoms that can be hydrogen-bond partners to hydrogen-bonding functional groups in the biopolymer; (2) estimating the possible the hydrogen-bond schemes between the biopolymer and ligand molecule and the possible conformations of a hydrogen-bonding part of the ligand molecule at the same time by comparing the distances between the dummy atoms with the distances between the hydrogen-bonding heteroatoms; and (3) obtaining the possible docking models of the biopolymer-ligand molecule complex by changing the coordinates of all atoms of the ligand molecule into the coordinate system of the biopolymer, according to the correspondences between the hydrogen-bonding heteroatoms in
    Type: Grant
    Filed: September 27, 1994
    Date of Patent: June 24, 1997
    Assignee: Akiko Itai
    Inventors: Akiko Itai, Miho Mizutani